Cow herd breeding For profitable production, sufficient cow resources to meet the production needs of calves are as important as herd management. It should be understood whether cattle and sheep can be fed together. Whether there are surplus crops suitable for cultivation can be used to reduce feed costs for dairy cows. Whether there are surplus pens and feeds for raising post-weaned calves can increase the added value of calves. Most herds start to produce calves in the spring or in the rainy season, because calving at this time can reduce calf feeding costs. Low-cost, high-quality forage allows cows to maximize their potential to feed young animals. There is also the option of calving in the fertile steppe in the fall to offset the additional costs of breeding cows for winter cows through the larger weaning weight of calves. Fall calving often results in the highest gross profit per cow, while the gross profit per unit area of ​​pasture is higher in spring. Many pastures convert autumn calves into spring calving to reduce production costs. Reserve heifer management The principle of elimination of yak herds includes the elimination of those debilitating cows who have continued infertility, delaying calving, or being related to old age. The average replacement rate is 16%, and the average life span of the herd is 7 years. Consider purchasing yak from the dairy herd as a reserve heifer. Farmers should purchase 15% to 20% of yak or heifers to choose from. Heifers that prove unfit for colostral cattle can be slaughtered as beef cattle. In most cases, for the best physical condition, the first calf preference should be around 2 years old. However, in calf-fed cows, autumn-born heifers are usually two and a half years old. When the first calving. In both cases, good management is necessary to achieve both mating and postpartum body weight. Heifers are best given calves at the beginning of the puerperal period so that they can make up for the inevitable delays in the second calving. Difficulties are very detrimental to heifers and they should be bred with easy products. Difficulty in giving birth is also the reason for the delay in the second breeding. Feeding management of nursing cow herds Management during the puerperal period. The goal of feeding and management of nursing herds is to have a higher proportion of cows produce live ticks within 12 weeks or less. The advantages of short puerperal duration are the following three points: First, the feed allocation of dairy herds can be well matched with the nutritional needs of dairy cows, which can save feed costs; second, close monitoring of calving conditions can be provided, and assistance can be provided if necessary. Production, to reduce yak mortality; Finally, calf performance consistent, there are few late-yield calves that are difficult to use. The longer the puerperal period of the general herd is, the obvious feature of the low pregnancy rate. Late-producing cows can be used to mate with bulls shortly before the end of the mating season, and may be difficult to conceive, eventually failing to get pregnant with other cows. The only way for cows with long calving periods is to eliminate late-producing cattle, or to exchange them with spring and autumn calf-bearing herds so that they can keep up with the calving period of the herd. The disadvantage of the latter scheme is that the cows are transferred from one herd to another, but may not resolve the underlying cause of the low pregnancy rate. DC 3V With Lithium Battery Smoke Alarm Dc 3V With Lithium Metal Battery Smoke Alarm,Lithium Metal Alarm,Lithium Metal Smoke Alarm,Lithium Metal Battery Smoke Alarm Guangdong Isafenest Co.,Ltd. , https://www.isfenest.com
Cow herd management